Liquid-power-transmitting apparatus.



PATENTED SEPT. 15

G. G. PALMER. I LIQUID POWER TRANSMITTING APPARATUS.

APPLICATION FILED MAY 31, 1899.

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Patented September 15, 1903.

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CASSIUS O. PALMER, OF NEW YORK, N. Y., ASSIGNOR TO RAlLlVAY & STA- TIONARY REFRIGERATING COMPANY, A CORPORATION OF DELAWARE.

LlQUlD-POWER-T RANSMITTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 738,837, dated September 15, 1903.

Application filed May 31,1899. Serial No. 718,925. (No model.)

To (l/ZZ whom, it 72%(07/ concern.-

Beit known that I, CASSIUS C. PALMER, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Liquid Power- Transmitting Apparatus, of which thefollow ing is a specification.

In the accompanying drawings, Figure 1 is :o a side elevation, partly in section, of an apparatus containing my invention, a cover-cap being removed on the right-hand side and a part of the front wall broken out to show outlet'passage. Fig. 2 is a transverse section at I 5 2 2, Fig. 1. Fig. 3 is a transverse section at 3 3, Fig. 1. Fig. 4 is a vertical section of a valve that may lie interposed, if desired, in the pipes shown in Fig. 1, the section being taken at 4 4, Fig. 5. Fig. 5 is a transverse section of the same at'5 5, Fig. 4.

A is the transmitter, and B the receiver of power, or vice versa, as desired. The conveyer of power is a liquid, such as oil, which circulates through the pipes O and D from the transmitter to the receiver and back again. Since the transmitter and receiver are identical in con struction,the following description of the transmitter will answer for both.

A case composed of the two castings 1 and 2, secured together by the screws 3, contains a square channel 4, concentric with a shaft 5 and communicating with the ends of the pipes O and D through the tangential channels 6 and 7. The case also contains a hubspace 8, an arm-space 9, and a rim-space 10. The case is fixed to any suitable support 11 and contains stufling-boxes 12 and 13, through which the rotating shaft 5 extends. Fixed to the shaft 5 is a wheel consisting of the hub 14, radial arms 15, rim 16, and blades 17, pro jecting radially from the periphery of the rim. The rim 16 accurately fits the rim-space 10, so as to cut off communication between the channel 4 and arm-space 9. Each blade 17 accurately fits across the channel 4. Thus it will be seen that liquid in the channel will be forced ahead of the blades when the shaft is rotated in the direction of the arrow.

To compel the liquid to flow out of the channel 4 into the passage 6 and pipe O, I provide the following mechanism: Between the passages (3 and 7 the cast part 1 is provided with a semicircular partition 18, forming a semicircular annex or enlargement 19 of the channel 4. At the junction between this annex and the channel a shaft 20 extends across from the case part 1 to the case part 2, which shaft carries a turnstile composed of four symmetrically-arranged radial blades or arms 21, each of which is just long enough to extend from the shaft 20 to the partition 18 on the one side or to the rim 16 on the other side. Each arn121 is wide enough to extend entirely across from the case part 1 to the case part 2. Therefore the arms 21 entirely close the channel 4 between passages 6 and 7 when in the position shown. Each arm 21 is pointed, so that its end is adapted to engage in the notch in the face of ablock 22,which is adapted to slide radially with respect to the shaft 20 in guideways 23. The bolt 24, adjustable bolt-head 25, cross-piece 26, and spring 27 serve to hold the block 22 normally in the position shown, but permit it to recede sufficiently to let the arm 21 escape from its notch and the turnstile to rotate one-quarter revolution when either of those arms is struck by a blade 17. The spring 27, however, is sufficiently powerful to hold the wheel from turning excepting when one of its arms is hit by one of the blades 17.

28 is an enlargement in the side of the channel 4, so placed that it is passed by each blade 17 as it passes from the passage 6 to the arm 21.

29 is a corresponding enlargement between passage 7 and arm 21., which enables the transmitter to run in the opposite direction if desired.

30 is a pipe connecting the passage 7 with the arm-space 9. This pipe is provided with a check-valve 31,- openingtoward the passage 7. A similar pipe 32, with valve at 33, may be used to connect passage 6 with arm-space 9.

The operation is as follows: Turning the shaft 5 rotates the blades 17 and forces the liquid from passage 7 around channel 4 and into passage 6. \Vhen a blade 17 approaches an arm 21, the liquid entrapped between the two can escape past the blade 17 into the passage 6 through the enlargement 28. When the blade 17 strikes the turnstile-arm 21, it

turns the stile one-quarter revolution, and thus in passing it places it in a position to cut oi? the liquid from passing. If any liquid leaks into the arm-space 9 from the channel 4, it will return to the passage 7 through pipe 30. The current of liquid thus forced through the channel 4 of the receiver B, acting against the blades 17 of the receiver, compels the receiver-wheel and the receiver-shaft 5, on which it is fixed, to rotate. v

In Figs. 4 and 5 I have shown a shunt mechanism whereby by creating a by-pass between the pipes the receiver iscut off from the current. 34 and 35 are twoyparts of a case connecting the pipes O and D at some point between the transmitter and receiver. WVithin this case is a slide 36, containing four holes 0 C and D D The holes 0 and D extend entirely through the slide and are not connected together. The holes 0 and D are connected together by the groove 37 in the slide, but extend only partially through the slide. Therefore when the slide is moved so that the holes 0 and D register with the pipes C and D the current flows from transmitter to receiver; but when the slide is moved so that holes C and D register with the pipes O and D the current flows from the transmitter to and through the groove 37 and back to the transmitter without going to the receiver. 38 is a handle by which the slide may be moved, and 39 is a spring-detent by which it is prevented from moving too easily. 40 is a groove in the slide 36 on the opposite side from the groove 37, which will perform the same function as the groove 37 when the receiver 13 is employed as the transmitter and the transmitter A as the receiver.

I claim-' 1. A hydraulic power-transmitting mechanism, comprising two interconvertible pump and motor devices, two connecting pipes adapted to form with said pump and motor devices a liquid circuit, and a slide intersecting both pipes and having passages adapted in one position to form through connections for said pipes, and in another position to form cross connections between the same ends of the two pipes, while the slide closes the connection between the ends of the same pipe.

-2. A hydraulic power-transmitting mechanism, comprising two interconvertible pump and motor devices, two connecting pipes adapted to form with said pump and motor devices a liquid circuit, a casing interposed in both pipes, a slide fitting said casing and having through passages or holes adapted to register with said pipes and also having on opposite sides grooves or passages adapt-ed to register with both pipes to form cross connections between them whereby the pump and motor mechanisms are disconnected.

3. A hydraulic power-transmitting mechanism, comprising two interconvertible pump and motor devices, two connectingpipes adapted to form with said pump and motor 'devices aliquid circuit, and two drainagepipes for each pump and motor device adapted to receive the leakage from said pump and motor mechanisms and discharging one into each of the main connecting-pipes, said drainage-pipes having check-valves opening into the main or connecting pipes whereby the drainage-chambers in each pump and motor device may freely drain into the return-pipe while being freed from the power-pressure in the other pipe.

4. A hydraulic power-transmitting mech anism, comprising two reversible rotary pumps adapted to be used as either pumps or motors, two pipes connecting with said pumps and forming therewith a hydraulic circuit and drainage-pipes independently c011- necting the central or inoperative parts of each of said pumps with both of the circuitpipes, and having check-valves opening'away from said motors, whereby leakage from the pumps is conveyed back into the circulation and the device is reversible without subjecting the central chambers of the pumps to the power-pressure.

5. A hydraulic power-transmitting mechanism, comprising two rotary pump mechanisms, each containing a power-wheel and an abutment-wheel, spring-held slides having notches adapted to engage the abutmentwheel to prevent turning, pipes connecting the two pumps to form a hydraulic circuit, drainage-pipes extending from the central portions of said wheels to both circuit-pipes, and check-valves in said pipes opening away from said wheels.

6. A reversible rotary pump and motor device having supply and discharge pipes, and drainage-pipes connecting the central spaces in said pump and motor device with both supply and discharge pipes, and a checkvalve in each of said drainage-pipes opening toward the supply or discharge pipe.

OASSIUS C. PALMER.

WVitnesses:

OHAs. E. ANDERSON, FRED S. KEMPER.

TDD 

